Answer: 5 seconds
<u>Step-by-step explanation:</u>
Maximum height is the y-value of the vertex. The number of seconds at maximum height is the x-value (aka axis of symmetry).
h(x) = -2x² + 20x + 48
a=-2 b=20 c=48
Axis of symmetry: x = 
= 
= 
= 5
Answer:

Step-by-step explanation:

Answer:
The Answer is A. slope = 1.5 and y-intercept = -2
Step-by-step explanation:
In y=mx+b form b represents your y-intercept and m (or the number next to the x) is your slope